You are given a doubly linked list which in addition to the next and previous pointers, it could have a child pointer, which may or may not point to a separate doubly linked list. These child lists may have one or more children of their own, and so o…

[LeetCode]430. Flatten a Multilevel Doubly Linked List 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/description/ 题目描述: You are given…

原题链接在这里:https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/description/ 题目: You are given a doubly linked list which in addition to the next and previous pointers, it could have a child pointer, which may or may not point to a sepa…

/* // Definition for a Node. class Node { public: int val = NULL; Node* prev = NULL; Node* next = NULL; Node* child = NULL; Node() {} Node(int _val, Node* _prev, Node* _next, Node* _child) { val = _val; prev = _prev; next = _next; child = _child; } }…

题目链接:LeetCode 430. Faltten a Multilevel Doubly Linked List class Node { public: int val = NULL; Node* prev = NULL; Node* next = NULL; Node* child = NULL; Node() {} Node(int _val, Node* _prev, Node* _next, Node* _child) { val = _val; prev = _prev; nex…

You are given a doubly linked list which in addition to the next and previous pointers, it could have a child pointer, which may or may not point to a separate doubly linked list. These child lists may have one or more children of their own, and so o…

您将获得一个双向链表,除了下一个和前一个指针之外,它还有一个子指针,可能指向单独的双向链表.这些子列表可能有一个或多个自己的子项,依此类推,生成多级数据结构,如下面的示例所示. 扁平化列表,使所有结点出现在单级双链表中.您将获得列表第一级的头部. You are given a doubly linked list which in addition to the next and previous pointers, it could have a child pointer, which m…

Given a binary tree, flatten it to a linked list in-place. For example, given the following tree: 1 / \ 2 5 / \ \ 3 4 6 The flattened tree should look like: 1 \ 2 \ 3 \ 4 \ 5 \ 6 Solution 1: # Definition for a binary tree node. # class TreeNode(objec…

Given a binary tree, flatten it to a linked list in-place. For example,Given 1 / \ 2 5 / \ \ 3 4 6 The flattened tree should look like: 1 \ 2 \ 3 \ 4 \ 5 \ 6 click to show hints. Hints: If you notice carefully in the flattened tree, each node's right…

Given a binary tree, flatten it to a linked list in-place. For example,Given 1 / \ 2 5 / \ \ 3 4 6 The flattened tree should look like: 1 \ 2 \ 3 \ 4 \ 5 \ 6 click to show hints. Hints: If you notice carefully in the flattened tree, each node's right…